That is correct for an elevated command prompt. Does it have C:\Windows\system32 as the prompt path like below? Your first screenshot had your user profile path instead, so that was why I thought you were not opening an elevated command prompt.
The activation phone number is different per location. Be sure to use the 1-800 number for your location so that the call will be free.
PLease post a FULL MGADiag report so we can confirm the results - your initial report was incomplete, and only showed that the system could not have been legally activated at the time, as the Key in use was the Default Key (which can never be activated).
Computer type Laptop System Manufacturer/Model Number Asus K52F OS Win 7 x64 Home Premium (and x86 VirtualBox VM) CPU i3 370M Motherboard Asus Memory 8GB - finally :) Graphics Card it's an i3, dude! Sound Card onboard Monitor(s) Displays 15.6" built-in Screen Resolution 1366x768
PSU n/a Hard Drives 750GB Seagate internal
Sundry external drives attached to other computers on the local network Internet Speed as much as I can get - usually on a dongle, so <1Mb/s Antivirus MSE Browser IE10/Chrome/FF(if I must)